Concrete floor construction



March 1s, 19,24; 1,487,098 M. 'S4 GOLDSNUTH CCCCCCCCCCCCCCCCCCCCCC ION Filed NOV. 23 1921 2 Sheets-Sheet 1 March 1s, 1924; 1,487,098 l M. S. GOLDSMITH CONCRETE FLOOR CONSTRUCTION Filed Nov. 25, 1921 2 Sheets-Sheet. 2

atroz? 4 Patented Mar. 18, 1924.

MAX S. GOLDSMITH, OF CINCINNATI, OHIO.

CONCRETE FLOOR CONSTRUCTION.

Application led November 23, l1.921. Serial No. 517,351.

To all whom t may concern:

Be it known that I, Max S. GoLDsMrrH, a citizen ofthe United States of America, and resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Concrete Floor Constructions, of which the following 80 and one surface of which may be finished to' present a finished ceiling upon removal of the supporting framework.

Another object is to provide an eicient and simple locking means for securing the ceiling elements upon the concrete beams and upon one another.

Another object is to provide simple means to position domes upon the ceiling elements preparatory to pouring the plastic.

80 These and other objects are'attained by the means described herein and disclosed in the accompanying drawings, in which:

Fig. 1 is a plan view of a number of ceiling plates showing their relation when positioned to have a plastic material poured thereupon.

Fig. 2 is an enlarged transverse sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a perspective view of a dome forming a detail of my invention.

Fig. 4 is a plan view similar to Fig.v 1 showing a modified form of construction.

Figf is an enlarged sectional view on line 5--5 of Fig. 4 and embodying certain other modifications.

Fig. 6 is a perspective view of a ceiling plate or precast block forming Va detail of my invention.

Figs. 7 and 8 are perspective views of ,50 modified forms of precast blocks and means of forming seats for domes, all of which form details of my invention.

In constructing a oor embodying my invention, a series of rows of ceiling plates or precast blocks l, of any suitable material are laid upon centering boards. 2 forming a portion of the temporary form work 3, only the ends 4 of the blocks being supported on the boards with the ends and sides of the blocks abutting both longitudinally and transversely. At spaced intervals along each of the opposite ends 4, of the' block are Jformed notches 5 which, on the upper surface 6 of the blocks, are of a smaller size than at the lower face or base 7 of said blocks, whereby an undercut face 8 extends between such upper and lower surfaces. These notches may be formed directly opposite one another upon the blocks, or the notches on opposite ends of the blocks may bear a staggered relation if desired.

VWhen the notches are spaced directly opposite one another, as shown in Fig. 1, a cross sectional view taken to that portion of the block having the notches at lopposite ends thereof, discloses a substantially dove tailed form, as is shown in Fig. 6. In Figs. 4 and 6 the notches 5 are disposed at the corners of the blocks rather than intermediate the sides 9 as shown in Fig. 1. The plates are preferably made uniform so thatthe notches 5 of any one block will register with the notches of the adjacent block when the blocks are mounted upon the temporary structure 2 and 3, whereby, when a plastic material is vpoured upon t-he plates, some'of theV plastic will fill the pockets formed between adjacent plates and the temporary form work, thereby locking the plates upon such plastic material after the plastic has hardened. The plates shown in Figs. 1, 2, 4l, 5 and 6 have formed in their upper faces, the grooves 10 spaced at some slight distance from the notches 5- and extending substantially parallel with the ends of the blocks. rIhese grooves are made of suiiicient width and depth to accommodate the lower edges 11 of the sides 12 of the domes 13, which are mounted upon the plates prior to the pouring of the plastic. The

f domes may be provided with ends 141 which, 100

together with the sides 12 and tops 15 there#` of, serve to exclude any of the plastic from that portion of the plate covered by the domes. In the lefthand portion of Fig. 1

, is shown a construction wherein domes, such as shown in Fig. 3, are employed, Vand in which structure plastic is poured into the spaces 16 between the ends of adjacent domes so as to form cross beams. In the right hand side of Fig. 1, the domes used have no ends 1-10 14, the adjacent domes overlapping one another as shown at 17, thereby eliminating the cross beams. Then the concrete is poured so as to cover the plates and the domes, that which is disposed between the sides of adjacent domes, or in other words in the space 18, forms beams after it has hardened. That concrete which enters into the spaces 24 and 25, see Fig. Ll, forms beams and cross beams on hardening.

In Fig. 5 the groove 19 is formed upon the upper face of the plate by forming thereupon lugs 20 and 21 which extend substantially parallel of one another across the upper face of the plate, the groove 19 lying between them.

ln Fig. 7 the channel bars 26 are precast in the blocks, and the side plate 27 thereof extend upwardly from the upper surface of the blocks and provide means lto position the domes upon the blocks, the .grooves in the blocks being `dispensed with. The channel may be embedded in the block in any suitable manner, for example, the channel may have wings 28 which are embedded in the block, or the channel may be set intothe block, as shown in Figs. 7 and 8. The usual reinforcing bars 29 are placed between the domes. ln pouring, the concrete is worked into the pockets formed by the notches 5 and is caused to occupy the space between the sides of the domes so as to form beams. and cross beams as eXplain'ed The pouring is continued until the concrete is filled in and covers the tops of the domes to the required depth to form the floor slabs. Thus, after vthe concrete has hardened and the form work 2 and 3 has been removed, vthe ceiling plates will be supported by the concrete keys 23 which were formed in the pockets occasioned by the notches 5. The plates or precast blocks form the ceiling for the storyrnext below. lf desired al plastic linish may be given 'to the undersurface of the blocks.

The several blocks shown in Figs. 1, 2, 4, 5 and 6 are provided with notches 5 whereby same may be bound upon the concrete beams and cross beams. The undercut faces formed on the blocks may be extended longitudinally and transversely of the blocks as shown in Fig. et, or they may eX- tend in but one direction as shown in Fig. 1. The ends of adjacent blocks may be spaced instead of abutting, and the undercut surface extended the entire width of the blocks, as shown in Figs. 7 and 8, whereby a dovet-ained concrete wedge is formed coeXtensive with the width of the blocks and which concrete wedge supports the adjacent blocks.

TWhat l claim is:

1. In a concrete floor construction the combination of a series of ceiling plates having slots along their ends, the slots having undercut walls terminating upon the upper and lower faces of the plates, the slots of adjacent plates communicating, domes adapted to lie upon the upper faces of the plates, means on the upper faces of the plates adapted to position the domes and for precluding spreading of the domes, and concrete surrounding the domes and fillino` the slots.

2. n a concrete floor 'construction the combination of a. series of ceiling plates having slots along their ends, the slots having undercut walls terminating upon the upper and lower faces of the plat-es, the plates having upon their upper faces ways 'extending in substantial parallelism with the ends of the plates, arched .forms adapted to have their lower ends disposed in engagement with the sides of the ways, the sides of the ways precluding spreading of the domes, and yconcrete surrounding the forms and lilling the slots.

3. In a. concrete floor construction the combination of a series of ceiling plates having their ends and side edges in abutment vupon one another and having registering notches along their edges, the walls of the notches receding inwardly and downwardly from the edges and tops respectively of the plates whereby openings are provided between abutting plates, the openings being enlarged at their bottoms, arched forms mounted on the plates, and concrete surrounding the forms and filling the openings and having its lowermost surfaces flush with' the ladjacent lower faces of the plates.

4. ln a concrete floor construction the combination of a series of ceiling plates having their end and side edges in abutment upon one ano-ther and having registering notches at their corners, the walls of the notches receding inwardly and downwardly from the tops of the plates whereby .openings are provided between abuttingz plates at t-he corners thereof, the openings being larger at their bottoms than at their tops, and concreteextending over the plates and lilling the openings and forming downwlardly diverging keys supporting the p ates.

ln testimony whereof, 1 have hereunto subscribed my name this 16 day of November, 1921.

MAX S. GOLDSMITH. 

